Filagra contains Sildenafil as an active ingredient. This medicine is used to treat erectile dysfunction and impotence in men. This medicine helps in maintaining sexual erection for a long time. It is important to consult a doctor before taking Filagra. The effect of this medicine is observed for 4 to 5 hours. This medicine is taken 30 minutes before sexual intercourse. Do not take Filagra with heavy food. This medicine makes sex life happy.